enhancer

from WordNet (r) 3.0 (2006)

enhancer
    n 1: anything that serves by contrast to call attention to
         another thing's good qualities; "pretty girls like plain
         friends as foils" [syn: {foil}, {enhancer}]

from The Collaborative International Dictionary of English v.0.48

Enhancer \En*han"cer\, n.
   One who enhances; one who, or that which, raises the amount,
   price, etc.
   [1913 Webster]

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